经热处理的Fe_(50)Cu_(50)亚稳合金的电阻特性研究

STUDIES ON THE RESISTANCE OF ANNEALED Fe_(50)Cu_(50) ALLOY

采用机械合金化方法制备了Ｆｅ５０Ｃｕ５０亚稳合金粉末，压制成片状后分别在２５０℃、６００℃进行了热处理，对热处理后的样品进行了低温电阻测量。结果表明，样品的电阻表现为负的温度系数，且经２５０℃热处理的Ｆｅ５０Ｃｕ５０样品表现出比６００℃热处理的样品更大的负温度系数．

Meta - stable solid solution of Fe50Cu50 was prepared by mechanical alloying of Fe and Cu powder blend. Heat treatment of the sample was performed at 250℃ and 600℃ respectively. The measuring results of resistance of the samples gave negative temperature coefficient. The resistance of Fe50Cu50 solid solutions annealed at 250℃ gave larger negative temperature coefficient than that at 600℃.